55020564 has 36 divisors (see below), whose sum is σ = 142318176. Its totient is φ = 17913168.

The previous prime is 55020557. The next prime is 55020583. The reversal of 55020564 is 46502055.

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 16224 + ... + 19319.

Almost surely, 2^55020564 is an apocalyptic number.

It is an amenable number.

55020564 is an abundant number, since it is smaller than the sum of its proper divisors (87297612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

55020564 is a wasteful number, since it uses less digits than its factorization.

55020564 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35596 (or 35591 counting only the distinct ones).

The product of its (nonzero) digits is 6000, while the sum is 27.

The square root of 55020564 is about 7417.5847821242. The cubic root of 55020564 is about 380.3426364821.

The spelling of 55020564 in words is "fifty-five million, twenty thousand, five hundred sixty-four".